Heater



H. N. SMITH AND G. A. WARTMAN.

HEATER.

APPLICATION `man MAR. 22, 1920.

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H. N. SII/HTH AND e. A. WARTMAN. l

HEATER.

APPLICATION FILED MAR. 22, 1920. I

Patented Sept. 26, 1922.-

2 SHEETS-SHEET Z.

Patented Sept. 26, 1922.

ms' prv li .in la rfa A tisana raar oie-irisi3..l

.HARVEY N. SMITH, OF ALLENTOW'N, AND GRANVILLE A. WARTMAN, OF BETHLEHM,

PENNSYLVANIA. j t

HEATER.

implication iiiediiiaich 22, 1920. serial ivo. 367,986.

lLehigh and State of Pennsylvania, have invented new and useful improvements in vHeaters, of which thev following is a specification.

' This invention relates to hot water heaters or steam generators of the type wherein the water'is circulated through a plurality of heating units and in which the hot gases of combustion generated in the furnace 4or burner portion follow a tortuous passageway and thereby come in contact with each of the individual heating units.

ln the various types of heaters heretofore constructed, the full benet has not been obtained from the fuel consumed due to the short `path of travel followed by 4the hot Vgases and imperfect combustion of such gases.

The objects of this invention are to provide an apparatus so constructed that the fullest possible benefit is obtained from the fuel consumed, wherein the water is heated or the steam generated in a much shorter space of time and to provide a structure consisting of several units which may be relatively inexpensively manufactured, which a'ie easily assembledand which are so formed as to facilitate repair and replacement in case of damage to any of its parts.

' lVith these and other objects in view, 'the 'invention consists in certain features of structure, combination and relation which will be more fully set forth hereinafter.

We have illustrated one embodiment of our `invention in the accompanying drawings, wherein:

Figure 1 is a vertical section through ya j Vhot water heater constructed in accordance used with any suitable source of heat, comprises a furnace portionl which is shown as including grate bars 2 positioned between upper and lower grate beds, respectively.. The upper grate bed is yprovided with hook members 5 adapted to cooperatek with shackles 6 carried by the lower grate bed. However, in the structure shown, it will be understood that the grate bars may be re- 'inoved and other heating means substituted therefor without departing from the4 scope of our invention.

A water jacket 7 is positioned above the grate bars.` This water jacket has'cold water inlets 8 and 9 and an opening 10 through kthe top portion thereof, the Water jacket enclosing combustion chamberA 11. We have show n the openings 10 inthe water jacket asbeiiig two in number, but it will be understood-that this may be a single openiiigof arcuate shape, if desired. The water jacket 7 is provided with an outlet 12 in the top part thereof, this outlet being Surrounded by a threaded boss 13.' i

The heater further comprises a plurality of hollow heating units 14 which have axial openings 15 and 16 therethrough, these lopenings being borderedby bosses 17 and 18. .These heating units have their top faces inclined upward from their outerledges, as

`at 19, so as yto .permit of ready passage of `Which, when the heater casing 22, which fits the side edges of the units tightly, is placed in position, forms afgas passage 23. The heating units are so arranged with relation to one another that these passages are staggered, as shown in Figure 4 of the drawings.

ln order that the utmost benefit may be derived from the fuel, we provide a vertical baille or vane 24 which is secured to the offset portions of the heating units andI fits tightly against the 'bosses and nipples connected to the heating units. This prevents immediate communication from one gas passage to the other and forces the hot gases of combustion to act upon the entire surface of each heating unit before they can pass upward to the neXt unit.

The casing 22 forms, at its upper end, a gas chamber 25 from whence the gas escapes through outlet 26 and the hot Water and water vapors pass from the uppermost heating unit throughout outlet pipe 27.

ln the operation of the apparatus, cold water or condensed steam is admitted to the water jacket through pipes 8 and 9. rl`he heat from the furnace acts in the usual manner upon the water jacket to raise the temperature of the water therein and the hot gases pass upward from the combustion lo chamber through openings l0, thence through passageways 23 formed in the lowerlmost heating unit. Upon entering the Zone bordered by the lowermost and the next higher heating unit, the gases are forced to traverse that rone owing to the interposition of baffle plate 24 until they have acted on the entire surface of the heating unit exposed to the zone whence they continue progressively from one Zone to another in alternate counter-clockwise and clockwise direction until they finally escape through outlet 26, the water, as it is heated, passing upward through pipe 27 into the system.

Having fully described our invention, we claim l. A water heater comprising a comb-ustion chamber, a water jacket surrounding said combustion chamber, means for introducing water into said water jacket, a plu- 30 rality of heating units arranged in spaced relation and in communication with said water jacket, a casing enclosing` said heating units, the upper part of said water jacket being provided with openings for' the passage of the hot gases of combustion, said heating units being formed with offset portions, and a vertical baffle plate connecting vadjacent offset portions of said units and forming passages with said offset portions 40 arranged in staggered relation, whereby the hot gases from the combustion chamber are directed into contact with the entire exposed surface of each heating unit.

2. A water heater comprising a combustion chamber, a water jacketl surrounding `said combustion chamber, means for introducing water into said water jacket, a plurality of superimposed heating units arranged in spaced relation and having offset portions arranged in staggered relation, and a vertical baffle plate connecting said offset portions, whereby the products of combustion escapino` from the combustion chamber are directed into contact with the entire exposed surface of each successive heating unit.

3. ln a water heater, a combustion chamber, a water jacket surrounding said combustion chamber, means for introducing water into said water acket, the upper part of 6c said water jacket being formed with openings providing a passage-way for thev hot gases of combustion, a plurality of heating units placed above said water jacket in axial alignment therewith, each of said heating @5 units comprising a hollow metallic body having a Vertical axial opening therethrough, means connecting said openings with the water jacket, and a continuous baffle plate intersecting said hollow metallic bodies, the latter having gas passages formed therethrough and arranged successively at opposite sides of said baflie plate.

il. ln a water heater, a furnace portion including a grate, a water jacket enclosing the side and'top walls of the combustion space above said grate, the top portion of said water jacket being formed with an opening constituting a passageway for the hot gases of combustion, means for supplying water to said water jacket, a plurality of superimposed heating units positioned above said water jacket, each of said heating units comprising a hollow metallic body having vertical axial openings communicating with said water jacket and being formed with a recess in one side, said heating units being so arranged as to provide a staggered passage for the products of combustion, a vertical bafie plate adapted to fit against the recessed sides of said heating units for preventing immediate communication between the passageways formed in each successive unit.

5. lln a hot water heater, a furnace portion, a water jacket partially surrounding said furnace portion, means for supplying water to said water jacket, the upper wall of said water jacket being formed with an.

opening constituting a passageway for they hot gases of combustion, a plurality of heating units in communication with said water jacket and arranged in vertical alignment and in spaced relation to provide heating zones therebetween at various heights, a casing surrounding said heating units, an opening in each heating unit whereby the products of combustion are directed to the next higher zone, said openings being disposed adjacent one side of the casing and a. baffle plate forming a vertical wall intercepting each of said zones, said baille plate being adapted to provide an obstruction to the intermediate passage of gases of combustion from one opening to the next adjacent opening.

6. ln a hot water heater, a furnace, a water jacket partially surrounding said furnace, means for supplying water tov said water jacket, the upper part of said water jacket being formed with an opening adapted to serve as a passage-way for the products of combustion and an opening constituting a water outlet, a boss surrounding said water outlet, heating units arranged in vertical alignment above said water jacket having axial aligning openings therein, bosses surrounding said openings, and nipples connecting said bosses to maintain the water jacket and said units in communication, said heating units being formed with offset portions on one side arranged in staggered relation and providing passages for the products of combustion, and a baffle plate preventing direct communication between said passages.

7. In a water heater, a furnace, a water jacket partially surrounding said furnace, means for supplying water to said water jacket, said water jacket being formed with an opening through its upper part adapted to provide a passageway for the products of combustion and an opening in its upper wall adapted to serve as a water outlet, a plurality of heating units in communication with the opening in the upper wall of said water jacket, each of said heating units being formed with an offset portion on one side adapted to provide a. passageway for the products of combustion, a casing surrounding said heating units, a vertical baffle plate positioned adjacent the offset portions oi' the heating units and adapted to prevent immediate communication between the passageway in one unit to the passageway in the next higher unit, an outlet for v 

